List the contents of a directory using only the echo command

List the contents of a directory using only the echo command.

Solution

echo - show a line of text

echo [OPTION]... [STRING]...                                    (Syntax)                           

Options:

-n - Do not yield a trailing newline.

-e - allow interpretation of backslash escape sequences

-E - Disable interpretation of backslash escape series

--help - show a help message and exit.

--version - Output version in sequence and exit.

If you state the -e option, the bellow escape sequences are known:

\\\\ - A literal backslash character (\"\\\").

\\a - An alert (The BELL character).

\\b - Backspace.

\\c - create no further output after this.

\\e – it is equal to pressing the escape key.

\\f - A form feed.

\ - A newline.

\ - A carriage return.

\\t - A horizontal tab.

\\v - A vertical tab.

\\0NNN - byte with octal value NNN

\\xHH - byte with hexadecimal value HH

echo be a basic command found in most operating systems that present a command line. It is regularly used in scripts, batch files, and because part of individual commands; wherever you may need to put in text.

a lot of command shells such as bash, ksh and csh implement echo like a built-in command.

bash is the default command shell in almost every major Linux sharing, so in this certification we will look at the performance, syntax, and options of bash\'s execution of echo.